Khan Academy: Algebra Ii: Recognizing a Perfect Square Quadratic

Introduce young mathematicians to the concept of factoring trinomials with perfect squares. This descriptive video provides a meaningful explanation of the factoring process. Each step is carefully written out in various colors during...

Demonstrates solutions to three problems. Problems address understanding of graphs of quadratic equations and translations of graphs of quadratic equations. [11:31]

What makes an integer a perfect square? Want to know the answer? Do the numbers 4, 9, 16, 25, and 36 mean anything? Is the light bulb glowing bright? Yes, anytime you square an integer, the value is a perfect square. That makes sense!

Demonstrates how to solve quadratic equations by factoring. Four equations are solved some involving special products including perfect square trinomials and difference of squares. This video also appears in the Algebra: ck12.org strand....

Demonstrates solutions to four problems. Problems address understanding of quadratic equations, ways to solve quadratic equations, and translations of graphs of quadratic equations. Practice problems available. [11:53]

The equation of a parabola is derived from the focus and directrix, and then the general formula is used to solve an example. [9:47]

Sal explains what it means to simplify a rational expression and why we would want to do that. Just don't forget the excluded values! [15:22]

A video lesson that goes through four example problems dealing with conic sections. Topics covered include: finding the vertex of a parabola from its equation; finding the asymptotes of a hyperbola and then sketching its graph;...

Video works through six problems from the California Standards Test. Three problems involve simplifying rational expressions, one of which uses exponent rules. Two problems involve graphing complex numbers or reading them from graphs....

Video shows an example of finding the horizontal and vertical asymptotes of a rational function. Also shows finding the behavior of the function as it approaches the asymptotes and uses this information to sketch a graph of the function....